Process of and apparatus for marking



PROCESS'OF AND APPARATUS FOR MARKING Filed Dec. 23, 1952 w m. I w EMAM a'm A TzUQ mlwgm HUI n v hill s o v g a x lQUSTQMERS NAME UZJQZYZ ATTORNE S.

Patented May 14, 1935 a 2,001,491

; UNITED STATES PATENT OFFICE:

Fred Hendey, Passaic, N. assignor to The Okonite Company, Passaic, N. J., a corporation of New Jersey Application December 23, 1932, Serial No. 648,568

va; Claims. (01. 18-13) This invention relates to improvements in Fig. 4 is a sectional view showing the strip methods of and apparatus for applying markpartly formed about the cable; ings such as trade-marks, customers names, etc. Fig. is a sectional viewsimilar to Fig. 4 with to electric cords and cables covered with rub-' the metal strip bent about the cable; 5 ber or other composition, rubber hose, etc. Fig. 6 is a sectional view of the cable and strip 5 I am aware that attempts have been i made after the lead sheath has been applied; prior to my invention to apply markings to rub- Fig. 7 is an elevational view of a section of the her cords and cables, but such methods require marked cable; while special apparatus, in the nature of special lead Fig. 8 is a sectional view of the marked cable press cores, etc. which add materially to the on the line 8-8 ofFig. 7. 10 00st 01 the Operation. Referring to the drawing in detail, I desig- One of the objects of the present invention is nates a lead press having the usual die memthe provision of a method and apparatus wherebers 2 and 3. Y in changes in the lead press are unnecessary, and Adjacent the lead press is a forming device 4 whereby the desired marking is applied in a for receiving the previously prepared metal strip 15 single operation. 5 from a reel 6 and for receiving also the insu- In the practice of my invention I first provide lated cable or cord 8 as will be hereinafter exa strip, preferably a metal alloy such as lead plained. and tin rolled to a thickness say of 12 or 14 mils. The forming device 4 illustrated more or less 0 The Strip is of Wldth Slightly s than t diagrammatically in Fig. 2 comprises a base 9 circumference of the insulation to be marked. carrying a guide roller l0 and block II. The The Strip is then I d between 3 P Of block II is provided with a longitudinal groove metal whee s the pe iphe y f o e of which is l2 for receiving the marker strip 5 and with a provided the words, letters, characsupe -nnposed longitudinal groove for receivsymbols other identifying indicia slightly ing the cable 8. The groove I3 is provided with 25 raised thereon. These letters or indicia are in a guide member '4, the cable a passing through the normal order of reading from left to right this member, while the metal strip 5 passes below.

so that the strip in between the wheels v I will be provided with an imprint of the letters or 31 figfi g fit g Z indma m reversed order or m other words they U-shape about the cable as illustrated in Fig. 4. 3O

2 3 3 323 g g gg gi figh on a The marking strip together with the cable reel ready for use and placed in juxtaposition to formed as illustrated in Fig. 4 are fed continuously another reel carrying the cable to be marked into the lead press where the forrmng operation 35 The marking strip and cable are then passed is completed as illustrated m Fig. 5 and where 35 through a forming device by which the cable is the lead sheath i6 is applied, as illustrated in enveloped in the marking strip to the extent permitted by the width of the strip, which, as above In the extruding of the sheath IE it will be I pointed out, is narrower than the circumference appreciated that the insulation 8 which is soft of the article to be marked. and unvulcanized is forced into the depressions 40 Th cable thus partially enveloped passes from forming the identifying indicia as shown at H the forming device into alead press wherea temin Fig and t t same t t insulation porary lead sheath is extruded in a well known is squeezed out between the adjacent edges f fi g gggzrg g g g 532 32:3 3 gifiggfiiggfi the metal strip as hereinbefore mentioned, to r a ization of the insulation has been completed after 2 ig fisgg gg z fzg ifi zfii gfii which the sheath and marking strip are retion 8 After vulcanization the lead sheath and the {3 g g g an apparatus marker strip are removed, and the exterior of the suitafile for the practice of my invention; insulation willbear in relief the identifying in- Fig. 2 is a perspective View f the formi dicia l9 as well as the longitudinal identifying vice ridge l8 as shown in Figs. 7 and 8.

Fig. 3 an elevation of a section of the metal While I have described a metal alloy strip it marking strip; 7 is to be understood that I do not wish to be 55 2 a limited to any particular alloy as it will be obvious that strips of other alloys or even other material may be employed.

It is also to be understood that I do not wish to be limited to the precise apparatus or method herein illustrated and described as various modifications may be made therein without departing from the spirit and scope of my invention.

What I claim is:

1. The method of applying discontinuous markings to the insulation of electric cables, cords and he like insulated with a soft compound, which ethod comprises enveloping the article in a strip /of smooth material having the desired discontinuous marking impressed therein in definite spaced relation and then extruding a lead sheath with a smooth interior surface about the enveloped article to provide discontinuous markings to the insulation of the article in predetermined spaced relation to each other.

2. The method of applying markings to the in' sulation of electric cables, cords and the like insulated with a soft compound, which method comprises bending about the insulated article a strip of smooth material having the desired discontinuous markings impressed therein in definite spaced relation, said strip being of a width slightly less than the circumference of the article to provide a continuous longitudinal space between the adjacent edges of the strip and then extruding 'a lead sheath with a smooth interior surface about the insulated article and strip to provide discontinuous markings and a continuous longitudinal ridge on the surface of the insulation.

3. The method of applying markings to the insulation of electric cables, cords and the like insulated with a soft compound, which method comprises longitudinally bending a strip of smooth material about the insulated article, said strip being of a width slightly less than the circumference of the article and having the desired discontinuous marking impressed therein in definite spaced relation, then extruding a lead sheath under pressure about said article and strip to extrude some of the insulation between the adjacent edges of the strip to form a continuous longitudinal ridge on the insulation and to extrude some of the insulation into the impressions in the strip to provide discontinuous markings on the insulation and thereafter removing the lead sheath and strip from the insulated article.

4. An apparatus for marking insulated electric cables, cords and the like, comprising a metal strip of a width slightly less than the circumierence oi the insulated cable to be marked, a forming device comprising guiding means for said cable and strip, a die carried by said forming device for bending the strip longitudinally about said cable to substantially enclose the cable in the strip, and a pressure device in juxtaposition to said forming device for receiving said enclosed cable and continously applying pressure thereto to extrude the insulation between the edges of said strip to provide a continuous longitudinal ridge on the surface of the insulation.

5. An apparatus for marking insulated electric cables, cords and the like, comprising a metal strip having the desired marking impressed therein, a forming device comprising guiding means for said cable and strip, a die carried by said forming means for bending the strip longitudinally about said cable to enclose the cable in the strip, and a lead press in juxtaposition to said forming device for receiving said enclosed cable and for continuously applying a lead sheath under pressure to said enclosed cable to extrude the insulation into the impressions in said strip to provide discontinuous markings thereon.

5. An apparatus for marking insulated electric cables, cords and the like, comprising a. metal strip having the desired markings impressed less than the circumference of the insulated cable to be marked, a forming device comprising guiding means for said cable and strip, a die carried by said forming device for bending the said strip into a. U-shape about said cable, a pressure device in juxtaposition to said forming device for completing the forming of said strip about said tube and for continuously applying heat and pressure to the strip and its enclosed insulated cable to extrude the insulation between the edges of the strip to provide a continuous longitudinal ridge onthe insulation and into the impressions in said drip to provide discontinuous markings on said insulation.

FRED HENDEY.

therein and being of a width slightly 

